Noise reduction type short wave receiver

Abstract

The utility model belongs to the technical field of short wave receivers, and particularly relates to a noise reduction type short wave receiver which comprises a short wave receiver body, an audio noise reduction device is embedded in the lower right corner of the front face of the short wave receiver body, and a volume knob, a loudspeaker and a noise reduction knob are sequentially installed on the front face of the audio noise reduction device from left to right. A power interface and an audio input / output interface are sequentially installed on the back face of the audio noise reducer from left to right, and a control mainboard and a storage battery are sequentially installed at the bottom end of the inner wall of the short wave receiver body from front to back. Therefore, the audio noise reduction mechanism is convenient to disassemble, overhaul and maintain, background sound noise reduction and sound amplification playing for improving the communication quality of the short-wave receiver are convenient, the short-wave receiver body is convenient to carry and use outdoors, and the actual different use requirements of users are fully met.

Description

Technical Field

[0001] The utility model belongs to the technical field of shortwave receivers, and in particular relates to a noise reduction shortwave receiver. Background Art

[0002] A shortwave receiver is a device used to receive shortwave radio signals. It can be used as a receiving terminal for shortwave telegraph, telephone, fax, low-speed data and broadcast circuits. The existing shortwave receiver has unique advantages such as long communication distance, good mobility and strong survivability in shortwave communication, but it also has weaknesses such as unstable channels and large background noise.

[0003] The above-mentioned prior art solutions have the following defects: 1. They do not have a detachable audio noise reduction mechanism, which makes it inconvenient to disassemble, inspect and maintain the audio noise reduction mechanism and to improve the background noise reduction and sound amplification of the shortwave receiver communication quality; 2. They do not have an independent power supply structure for field operation, which makes it inconvenient for the shortwave receiver to be portable outdoors, and thus cannot fully meet the different usage needs of users. Utility Model Content

[0004] The purpose of the utility model is to provide a noise reduction shortwave receiver to solve the technical problems that the shortwave receiver does not have a detachable audio noise reduction mechanism and does not have an independent power supply structure for field operation, so as to facilitate the disassembly, inspection and maintenance of the audio noise reduction mechanism, facilitate the background noise reduction and sound amplification playback to improve the communication quality of the shortwave receiver, and facilitate the outdoor portable use of the shortwave receiver body, thereby fully meeting the actual different use needs of users.

[0005] In order to solve the above technical problems, the utility model provides a noise reduction shortwave receiver, comprising: a shortwave receiver body, an audio noise reducer is embedded and installed in the lower right corner of the front of the shortwave receiver body, a volume knob, a speaker and a noise reduction knob are installed on the front of the audio noise reducer from left to right, a power interface and an audio input / output interface are installed on the back of the audio noise reducer from left to right, a control mainboard and a battery are installed on the bottom end of the inner wall of the shortwave receiver body from front to back, a back plate is fixedly connected and installed on the back of the shortwave receiver body by connecting bolts, and a charging interface is installed on the back of the back plate.

[0006] Furthermore, a display screen, a frequency modulation knob, a communication audio acquisition interface and a control button panel electrically connected to a control mainboard are sequentially installed on the left side of the front face of the shortwave receiver body, and a plurality of heat dissipation holes are provided on the upper right edge of the front face of the shortwave receiver body and the lower edge of the display screen.

[0007] Furthermore, handles are installed on the front edges of both sides of the shortwave receiver body, and a plurality of heat dissipation fins are installed on both sides of the shortwave receiver body.

[0008] Furthermore, a mounting slot having a size matching that for mounting the audio noise reducer is provided at the lower right corner of the front face of the shortwave receiver body, and the front face of the audio noise reducer is embedded in the inner side of the mounting slot and fixedly connected with a mounting bolt.

[0009] Furthermore, the control mainboard is electrically connected to the battery and the charging interface, and the control mainboard is electrically connected to the audio input / output interface and the power interface of the audio noise reducer.

[0010] Furthermore, a groove whose size matches that of the back plate is provided on the back of the shortwave receiver body, wherein threaded connection holes whose size matches that of the connection bolts are provided at the four corners of the groove.

[0011] Furthermore, a connecting through hole having a size matching that of the threaded connecting hole for installing the connecting bolt is provided on the back side of the back plate.

[0012] The beneficial effects of the utility model are:

[0013] 1. An audio noise reducer having a speaker, a volume knob, an FM knob and a frequency input / output interface is provided, which is electrically connected to the control mainboard through the frequency input / output interface, and is adjusted through the volume knob and the FM knob, so as to perform denoising, smoothing and enhancing processing on the communication signal received by the shortwave receiver, thereby effectively reducing the background noise during the communication process of the shortwave receiver and amplifying and playing the signal through the speaker, thereby improving the communication quality of the shortwave receiver. At the same time, the detachable audio noise reducer embedded in the shortwave receiver body is fixed by installing bolts, so as to facilitate the disassembly, inspection, maintenance and use of the audio noise reducer.

[0014] 2. The provided storage battery can independently power the field operation of the shortwave receiver body, so that the shortwave receiver body can be used outdoors in a portable manner, thereby fully meeting the actual use needs of users.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of a partially split three-dimensional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall internal structure of the utility model from a side view;

[0020] Figure 4 It is a rear view of the audio noise reducer of the utility model.

[0021] In the figure:

[0022] 1. Shortwave receiver body; 11. Display screen; 12. FM knob; 13. Communication audio acquisition interface; 14. Control button panel; 15. Heat dissipation holes; 16. Installation slot; 17. Handle; 18. Heat dissipation fins;

[0023] 2. Audio noise reducer; 21. Volume knob; 22. Speaker; 23. Noise reduction knob; 24. Audio input / output interface; 25. Power interface;

[0024] 3. Install the bolts;

[0025] 4. Control main board;

[0026] 5. Battery;

[0027] 6. Back panel; 61. Charging port; 62. Connecting bolts. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example:

[0030] like Figures 1 to 4As shown, a noise reduction shortwave receiver comprises a shortwave receiver body 1, an audio noise reducer 2 is embedded in the lower right corner of the front of the shortwave receiver body 1, a volume knob 21, a speaker 22 and a noise reduction knob 23 are installed on the front of the audio noise reducer 2 from left to right, a power interface 25 and an audio input / output interface 24 are installed on the back of the audio noise reducer 2 from left to right, a control mainboard 4 and a battery 5 are installed on the bottom of the inner wall of the shortwave receiver body 1 from front to back, a back plate 6 is fixedly connected and installed on the back of the shortwave receiver body 1 by connecting bolts 62, and a charging interface 61 is installed on the back of the back plate 6.

[0031] like Figure 1 and Figure 2 As shown, a display screen 11 electrically connected to a control main board 4, an FM knob 12, a communication audio acquisition interface 13 and a control button panel 14 are sequentially installed on the left side of the front of the shortwave receiver body 1, and a plurality of heat dissipation holes 15 are provided on the upper right edge of the front of the shortwave receiver body 1 and the lower edge of the display screen 11, handles 17 are installed on the front edges of both sides of the shortwave receiver body 1, and a plurality of heat dissipation fins 18 are installed on both sides of the shortwave receiver body 1, and the heat dissipation holes 15 and the heat dissipation fins 18 are provided to facilitate the heat dissipation of the entire shortwave receiver body 1, and the handles 17 facilitate the carrying of the shortwave receiver body 1 for use.

[0032] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, a mounting slot 16 with a size matching that of the audio noise reducer 2 is provided at the lower right corner of the front of the shortwave receiver body 1, and a mounting bolt 3 is fixedly connected to the inner side of the mounting slot 16 embedded in the front of the audio noise reducer 2, and the control main board 4 is electrically connected to the battery 5 and the charging interface 61, and the control main board 4 is electrically connected to the audio input / output interface 24 and the power interface 25 of the audio noise reducer 2, and the audio noise reducer 2 having a speaker 22, a volume knob 21, an FM knob 23 and a frequency input / output interface 24 is electrically connected to the control main board 4 through the frequency input / output interface 24, and the volume knob 21 is electrically connected to the control main board 4 through the frequency input / output interface 24. The FM knob 23 is adjusted to denoise, smooth and enhance the communication signal received by the shortwave receiver, thereby effectively reducing the background noise during the communication process of the shortwave receiver and amplifying the sound through the speaker 22, thereby improving the communication quality of the shortwave receiver. At the same time, the detachable audio noise reducer 2 embedded in the shortwave receiver body 1 is fixed by installing bolts 3, which facilitates the disassembly, inspection and maintenance of the audio noise reducer 2. The provided storage battery 2 can independently power the field operation of the shortwave receiver body 1, so that the shortwave receiver body 1 can be used outdoors in a portable manner, thereby fully meeting the actual needs of users.

[0033] like Figure 3As shown, a groove whose size matches that of the back plate 6 is provided on the back of the shortwave receiver body 1, wherein threaded connection holes whose size matches that of the connecting bolts 62 are installed are provided at the four corners of the groove, and connecting through holes whose size matches that of the connecting bolts 62 are installed are provided on the back of the back plate 6 corresponding to the threaded connection holes. The back plate 6 installed by the connecting bolts 62 can be disassembled, thereby facilitating the installation, maintenance and use of various components inside the shortwave receiver body 1.

[0034] In summary, firstly, an audio noise reducer 2 having a speaker 22, a volume knob 21, an FM knob 23 and a frequency input / output interface 24 is provided, which is electrically connected to the control mainboard 4 through the frequency input / output interface 24, and is adjusted through the volume knob 21 and the FM knob 23, so as to perform denoising, smoothing and enhancing processing on the communication signal received by the shortwave receiver, thereby effectively reducing the background noise during the communication process of the shortwave receiver and amplifying and playing the signal through the speaker 22, thereby improving the communication quality of the shortwave receiver, and at the same time, the detachable audio noise reducer embedded in the shortwave receiver body 1 is fixed by the mounting bolt 3. The device 2 facilitates the disassembly, inspection, maintenance and use of the audio noise reducer 2, and the arranged storage battery 2 can independently power the field operation of the shortwave receiver body 1, so that the shortwave receiver body 1 can be used outdoors in a portable manner, thereby fully meeting the actual use needs of users. The entire shortwave receiver has a detachable audio noise reduction mechanism and an independent power supply structure for field operation, thereby facilitating the disassembly, inspection, maintenance and use of the audio noise reduction mechanism, facilitating the background noise reduction and sound amplification playback for improving the communication quality of the shortwave receiver, and facilitating the outdoor portable use of the shortwave receiver body, thereby fully meeting the actual different use needs of users.

[0035] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0036] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A noise reduction shortwave receiver, characterized in that: include: A shortwave receiver body (1), wherein an audio noise reducer (2) is embedded and installed at the lower right corner of the front of the shortwave receiver body (1), and a volume knob (21), a speaker (22) and a noise reduction knob (23) are installed on the front of the audio noise reducer (2) in sequence from left to right, and a power interface (25) and an audio input / output interface (24) are installed on the back of the audio noise reducer (2) in sequence from left to right, and a control mainboard (4) and a storage battery (5) are installed on the bottom of the inner wall of the shortwave receiver body (1) in sequence from front to back, and a back plate (6) is fixedly connected and installed on the back of the shortwave receiver body (1) via a connecting bolt (62), and a charging interface (61) is installed on the back of the back plate (6).

2. A noise reduction shortwave receiver as claimed in claim 1, characterized in that: A display screen (11) electrically connected to a control main board (4), a frequency modulation knob (12), a communication audio acquisition interface (13) and a control button panel (14) are sequentially mounted on the left side of the front face of the shortwave receiver body (1), and a plurality of heat dissipation holes (15) are provided on the upper right edge of the front face of the shortwave receiver body (1) and the lower edge of the display screen (11).

3. A noise reduction shortwave receiver as claimed in claim 2, characterized in that: Handles (17) are installed on the front edges of both sides of the shortwave receiver body (1), and a plurality of heat dissipation fins (18) are installed on both sides of the shortwave receiver body (1).

4. A noise reduction shortwave receiver as claimed in claim 1, characterized in that: A mounting slot (16) having a size matching that of the mounting slot for mounting the audio noise reducer (2) is provided at the lower right corner of the front face of the shortwave receiver body (1), and a mounting bolt (3) is fixedly connected to the front face of the audio noise reducer (2) by being embedded in the inner side of the mounting slot (16).

5. A noise reduction shortwave receiver as claimed in claim 1, characterized in that: The control mainboard (4) is electrically connected to the storage battery (5) and the charging interface (61), and the control mainboard (4) is electrically connected to the audio input / output interface (24) and the power interface (25) of the audio noise reducer (2).

6. A noise reduction shortwave receiver as claimed in claim 1, characterized in that: The back of the shortwave receiver body (1) is provided with a groove whose size matches that of the back plate (6) for clamping, wherein the four corners of the groove are provided with threaded connection holes whose size matches that of the connection bolts (62) for installation.

7. A noise reduction shortwave receiver as claimed in claim 6, characterized in that: The back side of the back plate (6) is provided with a connecting through hole corresponding to the threaded connecting hole and having a size matching that for installing the connecting bolt (62).

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